"The Novo is an involving and addictive listen"

What Hi-Fi? Sound and Vision said that about our factory built Novo headphone amplifier and gave it their best headphone amplifier 2009 award. A group test winner in April 2009, it beat off rivals: the Creek OBH-21SE, Lehmann Rhinelander and Pro-ject Headbox SEII.

Headphone Amplifier Kit: The Novo Headphone Amplifier in Kit Form

Now you can build to the same award winning standards by buying the Novo headphone amplifier kit, available as a complete kit (recommended), the same without power supply, and a board assembly only kit. All come with a detailed handbook. And now we'll even pre-build it for you (see shop to order - under DAK kits)

Skill Level: For electronics hobbyists having good soldering skills and a general good understanding of electronic components

Few kits are this good!

The www.diy-audio-kits.com Novo headphone amplifier is identical in every respect to the commercial Graham Slee Novo version apart from the case graphics.

Options

Complete Kit: £120.00 + shipping + VAT

PCB Assembly + Case Kit without power supply: £112.00 + shipping + VAT

PCB Assembly Kit: £76.00 + shipping + VAT

All above kits supplied with Handbook

VAT not charged outside EEC (EU)

 

Please read "please note" below (click here) prior to purchase of PCB Assembly + Case Kit or Complete Kit

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A "Flexible Headphone Amp Kit"

The Novo Headphone Amplifier Kit is available in 3 options:

1... A Complete Kit: PCB Assembly Kit; Case Kit and Basic SM-PS Power Supply - the 3 packs featured above complete with the Handbook

2... PCB Assembly and Case Kits - the first two packs featured above complete with the Handbook

3... PCB Assembly Kit only - the first pack featured above complete with the Handbook

Most people will choose the convenience of being able to construct an identical (apart from panel graphics) copy of the Graham Slee Projects Novo Headphone Amplifier and go for the Complete Kit.

The power supply expert may well choose option 2 - the finished kit will then take on the characteristic of the power supply.

Option 3 is the ideal choice for the highly experienced constructor who's good at making his own enclosures - the connectors, controls and the grounding point will need to be extended off the board.

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Novo Headphone Amplifier Kit Handbook

A 20 page comprehensive handbook is supplied  with the Complete kit and PCB Assembly kit options.

A concise "How it Works" section explains in plain universal engineering language exactly how the circuit works.

A fold-out circuit diagram at the rear of the book makes the explanation easy to follow, and for budding analogue designers it's excellent educational material too!

With the assistance of the fold-out large scale colour photograph the PCB assembly instructions are easy to follow.

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Novo Headphone Amplifier Specification

(Measured into 32 Ohm load except where stated)

Rated Output: 150mW RMS (40mW RMS into 600 Ohms)

Distortion (THD plus noise)
At rated (max.) output: 0.03%
At volume control mid-point: 0.01%

Input Impedance: greater than 38 kilo Ohms

Recommended input range: 200mV - 1V RMS (2.8V p-p)

Frequency Response:
At maximum output: 20 Hz - 70k Hz (-3dB points)
At volume control mid-point: 20 Hz - 50k Hz (-3dB points)

Channel Balance: 0.5dB typical

Hum & Noise:
"A-curve" weighted: -90dB
CCIR quasi-peak 20Hz-20kHz: -84dB

Stereo Crosstalk: -51dB

Size (in enclosure): L. 10.5 W. 10.5 H. 5 (cm) approx. excluding controls and connectors

Warning: Headphones can cause hearing damage if operated too loud!

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Please Note: The case extrusions nearly always have a slight curvature due to the cooling metal emerging from the extrusion die. Production units are just the same. Please do not attempt straighten the extrusions - they will fit together OK and look right when fully assembled. An attempt to straighten them almost invariably will lead to disaster and be revealed in stress marks in the anodic finish. We can supply replacement extrusions at a cost.

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